|
Derivatives - Credit Derivatives (Details) (USD $)
|
Jun. 30, 2012
|
Dec. 31, 2011
|
||||
|---|---|---|---|---|---|---|
| Carrying Value [Abstract] | ||||||
| Derivative Liability, Fair Value, Gross Liability | $ 1,560,200,000,000 | $ 1,861,300,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 387,434,000,000 | 316,066,000,000 | ||||
| One to Three Years | 513,357,000,000 | 632,264,000,000 | ||||
| Three to Five Years | 565,493,000,000 | 678,480,000,000 | ||||
| Over Five Years | 180,150,000,000 | 276,972,000,000 | ||||
| Notional Amount of Derivatives | 1,646,434,000,000 | 1,903,782,000,000 | ||||
| In Text Details [Abstract] | ||||||
| Carrying value of written credit derivatives | 37,900,000,000 | 48,000,000,000 | ||||
| Notional Amount of Written Credit Derivatives With Identical Referenced Underlying Held by Entity | 1,100,000,000,000 | 1,000,000,000,000 | ||||
|
Credit Derivative [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 2,484,000,000 | 5,553,000,000 | ||||
| One to Three Years | 10,202,000,000 | 16,451,000,000 | ||||
| Three to Five Years | 24,126,000,000 | 35,406,000,000 | ||||
| Over Five Years | 21,941,000,000 | 33,793,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 58,753,000,000 | 91,203,000,000 | ||||
|
Credit Default Swap [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 2,310,000,000 | 5,031,000,000 | ||||
| One to Three Years | 10,080,000,000 | 16,449,000,000 | ||||
| Three to Five Years | 23,945,000,000 | 35,343,000,000 | ||||
| Over Five Years | 21,859,000,000 | 33,664,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 58,194,000,000 | 90,487,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 341,524,000,000 | 315,761,000,000 | ||||
| One to Three Years | 509,103,000,000 | 630,241,000,000 | ||||
| Three to Five Years | 561,405,000,000 | 664,446,000,000 | ||||
| Over Five Years | 179,194,000,000 | 275,496,000,000 | ||||
| Notional Amount of Derivatives | 1,591,226,000,000 | [1] | 1,885,944,000,000 | [1] | ||
|
Credit Default Swap [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Investment Grade [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 310,000,000 | 795,000,000 | ||||
| One to Three Years | 3,388,000,000 | 5,011,000,000 | ||||
| Three to Five Years | 12,990,000,000 | 17,271,000,000 | ||||
| Over Five Years | 5,547,000,000 | 7,325,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 22,235,000,000 | 30,402,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 246,780,000,000 | 182,137,000,000 | ||||
| One to Three Years | 391,375,000,000 | 401,914,000,000 | ||||
| Three to Five Years | 443,829,000,000 | 477,924,000,000 | ||||
| Over Five Years | 120,099,000,000 | 127,570,000,000 | ||||
| Notional Amount of Derivatives | 1,202,083,000,000 | 1,189,545,000,000 | ||||
|
Credit Default Swap [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Non Investment Grade [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 2,000,000,000 | 4,236,000,000 | ||||
| One to Three Years | 6,692,000,000 | 11,438,000,000 | ||||
| Three to Five Years | 10,955,000,000 | 18,072,000,000 | ||||
| Over Five Years | 16,312,000,000 | 26,339,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 35,959,000,000 | 60,085,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 94,744,000,000 | 133,624,000,000 | ||||
| One to Three Years | 117,728,000,000 | 228,327,000,000 | ||||
| Three to Five Years | 117,576,000,000 | 186,522,000,000 | ||||
| Over Five Years | 59,095,000,000 | 147,926,000,000 | ||||
| Notional Amount of Derivatives | 389,143,000,000 | 696,399,000,000 | ||||
|
Return Swaps Other [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 174,000,000 | 522,000,000 | ||||
| One to Three Years | 122,000,000 | 2,000,000 | ||||
| Three to Five Years | 181,000,000 | 63,000,000 | ||||
| Over Five Years | 82,000,000 | 129,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 559,000,000 | 716,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 45,910,000,000 | 305,000,000 | ||||
| One to Three Years | 4,254,000,000 | 2,023,000,000 | ||||
| Three to Five Years | 4,088,000,000 | 14,034,000,000 | ||||
| Over Five Years | 956,000,000 | 1,476,000,000 | ||||
| Notional Amount of Derivatives | 55,208,000,000 | [1] | 17,838,000,000 | [1] | ||
|
Return Swaps Other [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Investment Grade [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 86,000,000 | |||||
| Three to Five Years | 30,000,000 | |||||
| Over Five Years | 1,000,000 | |||||
| Derivative Liability, Fair Value, Gross Liability | 86,000,000 | 31,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 21,358,000,000 | |||||
| One to Three Years | 60,000,000 | |||||
| Three to Five Years | 9,116,000,000 | |||||
| Notional Amount of Derivatives | 21,418,000,000 | 9,116,000,000 | ||||
|
Return Swaps Other [Member] | Credit Risk Contract [Member] | Credit Default Swap, Selling Protection [Member] | External Credit Rating, Non Investment Grade [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 88,000,000 | 522,000,000 | ||||
| One to Three Years | 122,000,000 | 2,000,000 | ||||
| Three to Five Years | 181,000,000 | 33,000,000 | ||||
| Over Five Years | 82,000,000 | 128,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 473,000,000 | 685,000,000 | ||||
| Notional Amount of Derivatives, [Abstract] | ||||||
| Less than One Year | 24,552,000,000 | 305,000,000 | ||||
| One to Three Years | 4,194,000,000 | 2,023,000,000 | ||||
| Three to Five Years | 4,088,000,000 | 4,918,000,000 | ||||
| Over Five Years | 956,000,000 | 1,476,000,000 | ||||
| Notional Amount of Derivatives | 33,790,000,000 | 8,722,000,000 | ||||
|
Credit-related notes [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 230,000,000 | 127,000,000 | ||||
| One to Three Years | 275,000,000 | 92,000,000 | ||||
| Three to Five Years | 990,000,000 | 340,000,000 | ||||
| Over Five Years | 4,117,000,000 | 4,679,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 5,612,000,000 | 5,238,000,000 | ||||
|
Credit-related notes [Member] | External Credit Rating, Investment Grade [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 3,000,000 | |||||
| One to Three Years | 174,000,000 | 7,000,000 | ||||
| Three to Five Years | 831,000,000 | 208,000,000 | ||||
| Over Five Years | 2,580,000,000 | 2,947,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | 3,588,000,000 | 3,162,000,000 | ||||
|
Credit-related notes [Member] | External Credit Rating, Non Investment Grade [Member]
|
||||||
| Carrying Value [Abstract] | ||||||
| Less than One Year | 227,000,000 | 127,000,000 | ||||
| One to Three Years | 101,000,000 | 85,000,000 | ||||
| Three to Five Years | 159,000,000 | 132,000,000 | ||||
| Over Five Years | 1,537,000,000 | 1,732,000,000 | ||||
| Derivative Liability, Fair Value, Gross Liability | $ 2,024,000,000 | $ 2,076,000,000 | ||||
|
||||||